<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2012/12/31/121231011452_cuba_venezuela_maduro_304x171_vtv_nocredit.jpg>
<http://www.bbc.com/mundo/noticias/2012/12/121230_venezuela_chavez_cancer_maduro_cuba_az.shtml>